Director at Solid Power (NASDAQ: SLDP) receives 44,133 RSUs grant

Rhea-AI Filing Summary

Goldberg Steven H reported acquisition or exercise transactions in this Form 4 filing.

Solid Power, Inc. director Steven H. Goldberg received a grant of 44,133 restricted stock units, each representing one share of common stock at no cost. These units vest on the earlier of the first anniversary of the grant date or the day before the next annual stockholders’ meeting, subject to continued service. After this award, he holds 162,941 shares directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Goldberg Steven H

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	44,133	$0.00	--

Holdings After Transaction: Common Stock — 162,941 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs granted: 44,133 units Grant price: $0.00 per share Shares held after grant: 162,941 shares

3 metrics

RSUs granted 44,133 units Restricted stock units granted to director on May 20, 2026

Grant price $0.00 per share Equity compensation grant, not an open-market purchase

Shares held after grant 162,941 shares Total direct holdings following the reported transaction

Key Terms

restricted stock units, annual meeting of stockholders, service provider, 2021 Equity Incentive Plan

4 terms

restricted stock units financial

"Represents restricted stock units, which upon vesting of the unit, represent the right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

annual meeting of stockholders financial

"the day before the issuer's next annual meeting of stockholders following the grant date"

service provider financial

"subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021"

2021 Equity Incentive Plan financial

"service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through such vesting date"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Goldberg Steven H

(Last) (First) (Middle)

C/O SOLID POWER, INC.

486 S PIERCE AVE., SUITE E

(Street)

LOUISVILLE COLORADO 80027

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Solid Power, Inc. [ SLDP ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		A		44,133(1)	A	$0	162,941	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units, which upon vesting of the unit, represent the right to receive one share of the issuer's common stock. The restricted stock units vest upon the earlier of: (i) the first anniversary of the grant date or (ii) the day before the issuer's next annual meeting of stockholders following the grant date, in each case, subject to the reporting person continuing to be a service provider (as defined in the Solid Power, Inc. 2021 Equity Incentive Plan) through such vesting date.

	/s/ Kristen Gould, attorney-in-fact on behalf of Steven H. Goldberg	05/21/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did the latest Solid Power (SLDP) Form 4 report for Steven H. Goldberg?

The Form 4 reports that director Steven H. Goldberg received 44,133 restricted stock units in Solid Power, Inc. at no cost. Each unit will convert into one share of common stock once vesting conditions tied to time and continued service are satisfied.

How many Solid Power (SLDP) shares does Steven H. Goldberg hold after this grant?

Following the restricted stock unit grant, Steven H. Goldberg is shown holding 162,941 shares of Solid Power common stock directly. This figure includes the impact of the new award and provides context for his overall equity position in the company.

Was Steven H. Goldberg’s Solid Power (SLDP) transaction an open-market stock purchase?

No, the transaction was a grant of restricted stock units, not an open-market purchase. The Form 4 classifies it under a grant or award code, with a price per share of $0.00, reflecting equity compensation rather than a cash stock buy on the market.

What vesting conditions apply to Steven H. Goldberg’s Solid Power (SLDP) restricted stock units?

The restricted stock units vest on the earlier of the first anniversary of the grant date or the day before Solid Power’s next annual stockholders’ meeting. Vesting also requires that Goldberg continues as a service provider under the company’s 2021 Equity Incentive Plan.

How many restricted stock units did Steven H. Goldberg receive from Solid Power (SLDP)?

He received 44,133 restricted stock units, each representing the right to one share of Solid Power common stock upon vesting. This award is recorded at a price of $0.00 per share, consistent with compensation-related equity grants rather than cash purchases or sales.

What does the Form 4 say about the nature of Steven H. Goldberg’s ownership in Solid Power (SLDP)?

The Form 4 classifies Steven H. Goldberg’s holdings as direct ownership of Solid Power common stock. The grant is recorded as a non-derivative acquisition, reflecting restricted stock units that will settle into directly held shares when vesting requirements are met.